Superhydrophobic surfaces are gaining more and more attention as new applications for them arises. For surface to be superhydrophobic, it has to fulfil two requirements. The static contact angle has to be over 150 degrees but in addition to that, the surface has to have a low contact angle hysteresis. For this reason, measurement of dynamic contact angles is especially important when superhydrophobic surfaces are studied.Read More
As the exploration of new oil reservoirs is slowing down, there is a need to be able to utilize the current oil reservoirs more efficiently. After primary and secondary recovery, at least 50% of the original oil is left behind in the reservoir . Additional injections of fluids like polymers, surfactants or different gases are commonly used to displace and dissolve some of the remaining oil. This process is called tertiary or enhanced oil recovery (EOR) and can lead to an additional 8-16 % uptake of original oil in place (OOIP) .
Superhydrophobic surfaces were an instant hit in the scientific community when they were introduced over two decades ago. Since then thousands of publications have documented superhydrophobicity being achieved on various different substrates, from glass to fabrics.
The great potential of superhydrophobic surfaces was apparent early on. Applications ranging from self-cleaning windows to anti-acing surfaces and non-wetting fabrics appear commonly in the literature.
Topics: superhydrophobic surfaces
How does a nanomaterial interact with a cell?
How nanomaterials interact with the environment after they have been disposed of has many implications for potential toxicity and health concerns. Whether nanomaterials are being incorporated into commercial goods for their anti-microbial properties such as in work-out clothes or used for targeted drug therapies their overall prevalence is increasing. Therefore, the likelihood of someone coming into contact with these materials is also increasing.Read More
According to the 2016 World Energy Issues Monitor1, electric storage features in second place on the list of top critical uncertainties keeping CEOs, ministers and energy experts awake at night.
Superhydrophobic surfaces toward real-world applications
Soft Matter and Wetting research group at Aalto University published insights about superhydrophobic surfaces in Science recently1. The non-wetting surfaces have experienced an enormous boost of interest after the observation of superhydrophobicity and self-cleaning effect in natural lotus leaves.Read More
Complex fluid/fluid systems, such as emulsions, gels and various surfactant solutions, are the basis of most of our everyday consumer products from detergents to healthcare, but also found in biology and industrial processes such as in enhanced oil recovery and mineral processing.Typically these complex systems include surface active constituents that creates adsorbed layer on the fluid-fluid interfaces. Properties of this adsorbed layer are important to define quality of the final product.Read More
While contact angle (CA) goniometry involving placing a drop of liquid on a surface and measuring the resulting angle has been around for many years, we have only recently developed a system to account for the underlying surface’s micro-scale roughness.Read More
Surface tension of inkjet inks and the wettability of the printing substrate are important factors influencing the final printing quality and process reliability. Surface tension and interfacial interactions can be explored with various tensiometry technologies: Equilibrium and dynamic surface tension measurements can be utilized in ink formulation and development.Read More
Transformers are used by the electrical industry to transfer electrical energy from one circuit to another. The oil surrounding the coils in a power transformer provide cooling, insulation and protection against corona and arcing. It is normally obtained by fractional distillation and subsequent treatment of crude petroleum. This is why this oil is also known as mineral insulating oil.Read More
Topics: Interfacial Tension and Analysis